fix: resolve touch screen scrolling and clicking issues in bluetooth …

plugins/dde-dock/bluetooth/componments/bluetoothapplet.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: 2016 - 2022 UnionTech Software Technology Co., Ltd.
+// SPDX-FileCopyrightText: 2016 - 2026 UnionTech Software Technology Co., Ltd.
 //
 // SPDX-License-Identifier: LGPL-3.0-or-later
 
@@ -10,12 +10,13 @@
 #include "bluetoothconstants.h"
 #include "device.h"
 #include "horizontalseparator.h"
 #include "jumpsettingbutton.h"
 #include "constants.h"
 #include "plugins-logging-category.h"
+#include "touchscrollfilter.h"
 
 #include <DDBusSender>
 #include <DIconButton>
 #include <DLabel>
 #include <DListView>
 #include <DScrollArea>
@@ -229,10 +230,7 @@
     m_scrollArea->setPalette(scrollAreaBackground);
 
     // QScroller::grabGesture(m_scrollArea->viewport(), QScroller::LeftMouseButtonGesture);
-    QScroller *scroller = QScroller::scroller(m_scrollArea);
-    QScrollerProperties sp;
-    sp.setScrollMetric(QScrollerProperties::HorizontalOvershootPolicy, QScrollerProperties::OvershootAlwaysOff);
-    scroller->setScrollerProperties(sp);
+    new TouchScrollFilter(m_scrollArea);
 
     m_mainLayout->setSpacing(0);
     m_mainLayout->setContentsMargins(0, 10, 0, 0);

plugins/dde-dock/common/touchscrollfilter.cpp

@@ -0,0 +1,94 @@
+// SPDX-FileCopyrightText: 2026 UnionTech Software Technology Co., Ltd.
+//
+// SPDX-License-Identifier: LGPL-3.0-or-later
+
+#include "touchscrollfilter.h"
+
+#include <QEvent>
+#include <QTouchEvent>
+#include <QMouseEvent>
+#include <QScrollBar>
+#include <QApplication>
+
+TouchScrollFilter::TouchScrollFilter(QAbstractScrollArea *area)
+    : QObject(area)
+    , m_area(area)
+    , m_isDrag(false)
+{
+    if (m_area) {
+        m_area->viewport()->setAttribute(Qt::WA_AcceptTouchEvents, true);
+        m_area->setAttribute(Qt::WA_AcceptTouchEvents, true);
+        m_area->viewport()->installEventFilter(this);
+    }
+}
+
+bool TouchScrollFilter::eventFilter(QObject *watched, QEvent *event)
+{
+    if (!m_area)
+        return QObject::eventFilter(watched, event);
+
+    const QEvent::Type type = event->type();
+    if (type != QEvent::TouchBegin && type != QEvent::TouchUpdate && 
+        type != QEvent::TouchEnd && type != QEvent::TouchCancel) {
+        return QObject::eventFilter(watched, event);
+    }
+
+    QTouchEvent *te = static_cast<QTouchEvent *>(event);
+    if (te->points().isEmpty()) {
+        event->accept();
+        return true;
+    }
+
+    QEventPoint pt = te->points().first();
+
+    switch (type) {
+    case QEvent::TouchBegin: {
+        m_lastPos = pt.globalPosition();
+        m_isDrag = false;
+        break;
+    }
+    case QEvent::TouchUpdate: {
+        qreal deltaY = pt.globalPosition().y() - m_lastPos.y();
+        qreal deltaX = pt.globalPosition().x() - m_lastPos.x();
+
+        if (!m_isDrag && (qAbs(deltaY) >= QApplication::startDragDistance() || qAbs(deltaX) >= QApplication::startDragDistance())) {
+            m_isDrag = true;
+        }
+
+        if (m_isDrag) {
+            if (qAbs(deltaY) > 0 && m_area->verticalScrollBar()) {
+                m_area->verticalScrollBar()->setValue(m_area->verticalScrollBar()->value() - deltaY);
+            }
+            if (qAbs(deltaX) > 0 && m_area->horizontalScrollBar()) {
+                m_area->horizontalScrollBar()->setValue(m_area->horizontalScrollBar()->value() - deltaX);
+            }
+            m_lastPos = pt.globalPosition();
+        }
+        break;
+    }
+    case QEvent::TouchEnd: {
+        if (!m_isDrag) {
+            // Determine the correct target widget for the click
+            QWidget *target = m_area->viewport();
+            QPoint widgetPos = pt.position().toPoint();
+
+            // If it's a QScrollArea, the content widget is usually a child of the viewport
+            if (QWidget *child = target->childAt(widgetPos)) {
+                target = child;
+                widgetPos = target->mapFrom(m_area->viewport(), widgetPos);
+            }
+
+            QMouseEvent press(QEvent::MouseButtonPress, widgetPos, pt.globalPosition(), Qt::LeftButton, Qt::LeftButton, Qt::NoModifier);
+            QCoreApplication::sendEvent(target, &press);
+            QMouseEvent release(QEvent::MouseButtonRelease, widgetPos, pt.globalPosition(), Qt::LeftButton, Qt::LeftButton, Qt::NoModifier);
+            QCoreApplication::sendEvent(target, &release);
+        }
+        break;
+    }
+    default:
+        break;
+    }
+
+    event->accept();
+    return true;
+}

plugins/dde-dock/common/touchscrollfilter.h

@@ -0,0 +1,27 @@
+// SPDX-FileCopyrightText: 2026 UnionTech Software Technology Co., Ltd.
+//
+// SPDX-License-Identifier: LGPL-3.0-or-later
+
+#ifndef TOUCHSCROLLFILTER_H
+#define TOUCHSCROLLFILTER_H
+
+#include <QObject>
+#include <QPointF>
+#include <QAbstractScrollArea>
+
+class TouchScrollFilter : public QObject
+{
+public:
+    explicit TouchScrollFilter(QAbstractScrollArea *area);
+    ~TouchScrollFilter() override = default;
+
+protected:
+    bool eventFilter(QObject *watched, QEvent *event) override;
+
+private:
+    QAbstractScrollArea *m_area;
+    QPointF m_lastPos;
+    bool m_isDrag;
+};
+
+#endif // TOUCHSCROLLFILTER_H